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Chapter 8: Problem 18

Give three examples of first-row transition metal (Sc to Cu) ions whose electron configurations are represented by the argon core.

Short Answer

Expert verified
The three examples of first-row transition metal ions having electron configurations represented by the Argon core are: Scandium ion (Sc^3+), Titanium ion (Ti^4+), and Vanadium ion (V^5+).

Step by step solution

01

Identify Argon's Electron Configuration

First, let's identify the electron configuration of Argon. This configuration serves as a reference for our transition metals. Argon is in the 18th group and the third period of the periodic table, and its electron configuration is \(1s^2, 2s^2, 2p^6, 3s^2, 3p^6\). Its core is often labeled as [Ar].
02

Check First-Row Transition Metals

The first-row transition metals range from Scandium (Sc) to Copper (Cu). The general electron configuration for these elements is [Ar] 4s² 3dⁿ, where n can be from 1 to 10. However, these metals can form cations by losing some of their electrons, mostly from the 4s orbital.
03

Identify Correct Transition Ion

To find an ion whose electron configuration is just the Argon core [Ar], it essentially means identifying an ion that has lost both its 4s and 3d electron. This will yield the following possibilities; Sc^3+ ([Ar]), Ti^4+ ([Ar]), and V^5+ ([Ar]). Thus, these ions fulfil the conditions specified in the given exercise.

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Most popular questions from this chapter

Why do elements that have high ionization energies also have more positive electron affinities? Which group of elements would be an exception to this generalization?

In general, ionization energy increases from left to right across a given period. Aluminum, however, has a lower ionization energy than magnesium. Explain.

Explain why alkali metals have a greater affinity for electrons than alkaline earth metals.

Use the third period of the periodic table as an example to illustrate the change in first ionization energies of the elements as we move from left to right. Explain the trend.

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